Coiling and feed mechanism.



P. H.. RICHARDS.

.GOILING AND FEED MBGHANISM.

APPLIUATION FILED JUNE 15, 1909.

Patented May 17, 1910.

Wmesses:

m venan' y 'Xl-@Wmv FRANCIS I-I. RICHARDS, OF HARTFORD, CONNECTICUT.

GOIIJING .AND FEED MECHANISIVL Specification of Letters Patent.

Patented May 1'7, 1910.

Application filed .Tune 15, 1909. Serial No. 502,205.

To all whom it may concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inCoiling and Feed Mechanism, of which the following is a specification.

This invention relates to ceiling mechanism, and has for an object toprovide improved ceiling mechanism embodying an improved feed, capableof delivering the stock directly from a moving member to the coilingdie, andwhich stock feed in addition to its feeding capacity will act asan auxiliary coiling device for preliminarily bending the stock.

This improvement relates to the utilization of an internal-face roll incombination with an external-face roll for feeding a rod or `wire to acoiling device, usually a solid coiling die. The rod will, by the actionof the said rolls, as these feed it to the die, be preliminarily shapedinto a curved form. The forwarding pressure produced by the operation ofthe rolls causes `the rod when thus curved to have a tendency to bendoutwardly against the face of the internal-faced roll or member. Byreason of this feature the said internal face constitutes and operatesas a traveling bed upon and against which the rod is pressed and carriedforward and from which it is delivered directly to the working face ofthe die. By means of this peculiar and very effective organization ofthe said coperating devices the rod is positively controlled and is alsopositively fed forward without there being any intervening space betweenthe rod feeding devices and the die itself. In fact a certain portion ofthe internal face over and adjacent to the opening in the die (intowhich opening the rod passes from the said face to the interior of thedie) constitutes in eect a part of the die itself, with the additionalfeature that such part of the die thus formed outside of the die properby the said traveling face is a moving surface and not a stationary one.It will now be evident how the employment of the said travelinginternalface operates in such a manner that the fric-' tion of the rodvagainst said face by reason of the pressure of the rod thereon operatesto assist the proper delivery of the wire or rod int-o the die, andoperates also to assist in forcing forward the whole of the rod into thedie, even ,when the rod has been coiled up with the exception of a verysmall length of the same at the rear end of the rod. In the drawingsaccompanying and formlng a part of this specification an embodiment of aform of my invention is illustrated wherein- Figure l is an end view.Fig. 2 is an elevational view of the mechanism shown in Fig. 1. Fig. 3is a plan view taken on a plane at about the line 3-11 of Fig. 2 looklngdownwardly or in the direction of the arrow placed adjacent to the index3. Fig. 4C 1s a plan view taken on a plane indicated by the line 3-4 inFig. 2 but looking upwardly or in the direction of the arrow placedadjacent to the index 4. Fig. 5 is a .section taken on a plane at aboutthe line 5 1n Fig. 2 looking in the direction of the arrow placedadjacent to such line; and Fig. 6 1s a perspective view of a coilingdie.

The mechanism is shown as mounted upon a base 7 which has formedintegrally with it an upstanding portion 8 which is chambered out at 9for receiving a flange portion 10 of a member 11 which is locatedtherein.

Y Such member 11 in the present instance is annular and has on itsinternal periphery a circumferential stock engaging face 12. The flange10 is held in chamber 9 by means of a ring 10() and screws 101. Theflange 10 is shown as provided wit-h gear teeth 13 which will mesh withthe driver, herein illustrated as a pinion 141 mounted upon a shaft 15which is supported by a standard 16. The member 11 or its internal-faceconstitutes one roll of the feed rolls, and the present illustrationshows operating in conjunction therewith a pair of rolls 17 each ofwhich is provided upon its outer perimeter with a circumferential stockengaging face 18, which external faces are cooperative with the stockengaging face 12 of the internalfaced roll. Each of these rolls 17 isprovided with a pinion 19, which pinions are in mesh with internal gearteeth 190 carried by the member 1,1. The rolls 17 are mounted upon stubshafts 20 which are carried by a slide 21 supported in ways in the web8. rlhe slide 21 carries a stem 22 which is in screw threaded engagementwith the slide and is provided with a lock nut 23 for securing theadjustment effected by the stem. The stem is shown as passing through anapertured 'arm 24, and provided with a head 25, between which head andarm is inserted a compression spring 26 of suflicient strength to holdthe rolls 17-17 in proper working relation in respect to the roll 11.Adjustment of the tension of the spring may be had by screwing the stem22 in or out of the screw'threaded socket in which it is seated and thensetting down the set nut 23. The head 25 is provided for the engagementof a wrench.

The coiling die is illustrated in perspective in Fig. 6, and comprisesa. body portion 27 which is provided with elongated bolt holes 28 forreceiving tap bolts 29. The die proper is provided with a portion 30which projects into the interior of the annular roll l1 and is locatedin proper relation `to the faces 112 Aand 18 for receiving the rod asthis passes from between the bite of the rolls. This portion 30 is ofcourse open at one side for receiving the stock. The stock will passfrom the portion 30 into a circumferentially I closed die portion 31which may if desired be given a thread formation so as to facilitate theproper and normal movement of the coil as this is being formed.

It will be noticed that by t-he fact of the smaller internal rollsengaging the rod and forcing this against the internal face of theeoperative feed roll a relatively longer field of engagement between therolls and rod is had than in cases where the rod is passed between anordinary pair of feed rolls. It will also be noticed that the rollsacting as they do to force the rod 32 forward and about an internalface, such as 12, will bend such rod into a curved formation, as at 33,which is auxiliary and assistant to the coiling of such rod, this beine'as it were, the inauguration of the coil ben ing.

AThe completed product is illustrated at 34.

The inner or smaller rolls 17 act to press ythe rod against the face 12which moves forward with the stock which presents a moving face betweenthe place where the stock comes out from between the bite of the rolls'to the place where it enters into the die, so that such inner faceconstitues a movable lguide for the rod between the point where vtherolls cease to act upon it as a pair of feed rolls and where it isreceived by the coil forming device.

In building machines embodying the principles ofthis invention forpracticable use the size of the stock as well as the material from whichit is made and the degree of hardness at which such material will beused will be taken into consideration in designing the `mechanism and inarriving at the relative strengths and sizes of the various parts whichare employed.l In some cases a plain die consisting of a single partproperly shaped and located will be sufficient, especially when makingsprings of relatively small size. In other cases I prefer to employ acoiling device having or comprising one or more rolls located forbending and closing in the rod to t-lie proper diameter spirally and tothe required pitch or degree of spirality.

One feature involved in this present improvement, namely that of havingtwo rotating members one located within the other and whose axes ofrotation are eccentric one to the other and each of said members beingprovided with a'continuous circumferentia working face which said facesform a working pass at their are of nearest approach one to the other,and which members are arranged eccentrically one to the other, is, sofar as it appertains to rolling mechanism, illustrated and claimed in myapplication for Letters Patent filed April 30, 1902, bearing SerialNumber 105,273.

In my copending application Serial No. 505,952, filed July 6, 1909,there is disclosed and claimed mechanism embodying rotary stock formingdies for feeding directly to a coiling device the .stock which is fedforward and formed at the working pass between such rotary dies.

Having described my invention I claim:

1. In a coiling machine the combination with coiling means, of a feedroll having an inner circumferential stock engaging face and a feed rollhaving an outer circumferential stoek engaging face, said rolls beinglocated for feeding the stock directly to the coiling means.

2. In a coiling machine the combination with coiling means, of tworotating members located one within the other and whose axes of rotationare eccentric one to the other, each of said members being provided witha continuous circumferential working face, said faces forming a workingpass at their are of nearest approach one to the other, and located forfeeding the stock directly to the coiling means.

3. A coiling mechanism,comprising a feed embodying' two rotating memberslocated one within the other and whose axes of rotation are eccentricone to the other, each of said members being provided with a continuouscircumferential working face, said faces forming a working pass at theirare of nearest approach one to the other, and a coiling die locatedadjacent said working pass in the line of stock feed movement.

4. The combination with an internal-faced roll, of a roll mounted withinand coperative with the internalfaced roll and forming a working passfor gripping the stock and forcing the same forward, means for rotatingsaid rolls at the same surface speed, a eircuinferentially closedcoiling die having an open sided portion located adjacent to the workingpass of said rolls and in the line of stock feed movement therefrom.

5. The combination with a coiling die, of a feed therefor comprising twomembers located one within the other and whose axes are eccentric one tothe other, a working face upon the inner portion of the outer member anda working face upon the outer portion of the inner member, the two facescoperating together to form a pass adjacent said die at a point which isin line with the axes of the two members and on the sides of the axeswhere the working surfaces of the two members are in the closestrelation, the working portions of the faces which form the pass havingthe same relative movement with respect to the axis of one of themembers, and means for guiding a stock rod into the said die.

6. The combination with a coiling die, of an internal and an externalroll for feeding the stock to the die.

7 The combination with an internal' faced roll, of a pair'of rollsmounted within and cooperative with the internal-faced roll for grippingthe stock and forcing the same forward.

8. The combination with an internalfaced roll, of a pair of rollsmounted within and cooperative with the internal-faced roll for grippingthe stock and forcing the same forward, and means for rotating saidrolls at the same surface speed.

9. The combination with a coiling die, of

an internal-faced roll and a pair of rolls mounted within andcooperative with the in` ternal faced roll for gripping the stock andforcing the same into the die.

10. The combination with a coiling die, of an internal faced roll and apair of rolls mounted within and cooperative with the internal-facedroll for gripping the stock and forcing the same into the die, and meansfor positively rotating the rolls at the same surface speed.

11. A ring provided on its outer periphery with guiding faces and withgear teeth, and on its inner periphery with a circumferential stockengaging face and with gear teeth, means for engaging said guidingfaces, a pinion in mesh with said outer gear teeth for'rotating thering, a pair of rolls within said ring having on their outer peripheriescircumferential stock engaging faces and gear teeth meshing with theinternal gear teeth.

12. In a coiling machine, the combination with coiling means, of a rollhaving an inner circumferential stock engaging face and internal gearteeth, a roll having an outer circumferential stock-engaging face andlocated for feeding the stock directly to the teeth meshing with thesaid internal gear teeth.

13. The combination with a coiling die, of an internal and an externalroll for feeding the stock to the die, said rolls being provided withintermeshing gears, and elastically yieldable means for holding therolls in working relation.

14. A ring provided on its outer periphery with guiding faces and withgear teeth, and on its inner periphery with a circumferential stockengaging face and with gear teeth, means for engaging said guidingfaces, a pinion in mesh with said outer gear teeth for rotating thering, a slide movable radially of said ring, a pair of rolls carried bysaid Slide and located within said ring having on their outerperipheries circumferential stock engaging faces and gear teeth meshingwith the internal gear teeth, and elastically yieldable means activeupon said slide fordrawing the rolls against the ring.

l5. The 4combination with a coiling die, of an internal and an externalroll for feed ing the stock to the die,said rolls being provided withintermeshing gears, spring pressed means for holding the rolls inworking relation, and means for adjusting the tension of said spring.

16. A ring provided on its outer periphery with guiding faces and withgear teeth, and on its inner periphery with a circumferential stockengaging face and with gear teeth, means for engaging said guidingfaces, a pinion in mesh with said outer gear teeth for rotating thering, a pair of rolls within said ring having on their outer peripheriescircumferential stock engaging faces and gear teeth meshing with theinternal gear teeth, a circumferentially closed coiling die having anopen sided portion, said open sided portion being located within thesaid ring and in the plane of its stock engaging face for receiving thestock as this is fed forward by the said ring and rolls.

Signed at Nos. 9-15 Murray St., New York, N. Y., this 25th day of May1909.

FRANCIS H. RICHARDS.

Witnesses:

CHAs. L. RUSSELL, FRED. J. DOLE.

